64556800071 has 32 divisors (see below), whose sum is σ = 87818852352. Its totient is φ = 42174743040.

The previous prime is 64556800069. The next prime is 64556800111. The reversal of 64556800071 is 17000865546.

64556800071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 64556800071 - 2¹ = 64556800069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 64556799996 and 64556800032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64556800001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33745411 + ... + 33747323.

It is an arithmetic number, because the mean of its divisors is an integer number (2744339136).

Almost surely, 2^64556800071 is an apocalyptic number.

64556800071 is a deficient number, since it is larger than the sum of its proper divisors (23262052281).

64556800071 is a wasteful number, since it uses less digits than its factorization.

64556800071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2903.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 64556800071 in words is "sixty-four billion, five hundred fifty-six million, eight hundred thousand, seventy-one".